plugs BWNP-SH Series Blind Weld Nut Plugs The BWNP Series are designed to mask weld nuts, where it is not possible to thread a mask through the weld nut, or it is easier to install a mask into the weld nut from one side. Material: Silicone Color: Coded by Size C A D B WNP-SH Series Weld Nut Pull Plugs The WNP Series are designed to mask weld nuts. They will mask the threaded hole and the face of the first and last thread in the nut. Material: Silicone Color: Coded by size A B C UWPP-SH Series Silicone Washer Pull Plugs Our Ultrabake™ Silicone Pull Plugs are designed to mask plain and threaded holes; they will mask off the hole and leave a circular grounding or earthing area around the hole. Recommended for powder coating, e-coating, plating & anodizing. * For high-temperature processes up to 600°F (315°C) * Washer design eliminates the need for two-stage masking * Washer is dual-pupose designed to be used with counter sunk holes to mask off the faces of the countersink * Reusable Material: Silicone Color: See chart for color coding Optional Colors: Clear, White 198 * For other material and color options, contact customer service.